Dumping-wagon.



No. 726,989. PATENTED MAY 5, 1903. G. W. ROBERTS. DUMPING WAGON.

APPLIOATION FILED OUT. 17, 1902.

H0 MODEL. 4 SHEETS-SHEET 1.

WITNESSE [/VVENTOR I Altomey 1 z norms mans ca, PflO'fO-LITNQ, wmnmamu.n. a

No. 726,989. PATENTED MAY 5, 1903. v

G. W. ROBERTS.

DUMPING WAGON.

APPLICATION FILED OUT. 17. 1902.

' 4 SHEETS-SHEET 2.

N0 MODEL.

Attorney No. 726,989. PATENTED MAY 5, 1903.

- G. W. ROBERTS. v

DUMPING WAGON.

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11 \3 gi H Q p m I g Q F E M y H i \b L f? Q N Q Q h k I E g E u W fi Q,3 m R I Q Q I Q WITNESS 5- I BfgVE/VTOR 'BY I Hzzomey Patented May 5,1903.

PATENT OFFTQE.

GEORGE W. ROBERTS, OF WILMINGTON, DELAIVARE.

DUMPlNG-WAGON.

SPECIFICATION forming part of Letters Patent No. 726,989, dated May 5,1903.

Application filed October 17, 19 2. Serial No. 127,664. on model.)

To all whom. it may concern:

Be it known that I, GEORGE W. ROBERTS, a citizen of the United States,residing at Wilmington, in the county of Newcastle and State ofDelaware, have invented certain new and useful Improvements in Dumping-WVagons, of which the following is a specification, reference being hadtherein to the accompanying drawings.

This invention relates to an improvement in dumping-wagons, and it isembodied in the construction and arrangement of parts presently to bedescribed, and defined in the claims.

The object of the invention primarily is to provide a dumping-wagon withmechanism or means for so positioning the body or box that the same canbe readily turned at right angles to dump the load from the side, asdistinguished from that class of Wagons wherein the load is dumpedendwise. In structures of this character it is necessary to move theentire load in efiecting the change of the position of the wagon-body,and my present invention is designed largely to facilitate thismovement; and as distinguished from other inventions of this characterit consists in means normally supporting the" wagon-body in a stationaryposition and against movement, and which means are withdrawn,transferring the body, with its load, from the stationary supportingmeans onto suitable rolls or a turn-table. In the prior art it has beensuggested to elevate the load by forcing the rollers or turn-tableupward until the load rests thereon and is moved bodily upward above theframe. In my invention I contemplate mechanism of the oppositenaturethat is, I provide a frame which will normally support the loadand which-is normally elevated. The box or body is then filled, and whento be dumped the supporting frame is lowered, lowering the load onto theantifriction-Wheels or turntable, the frame moving beyond a position ofcontact with the body.

With the above general description of the nature and principle of theinvention I shall proceed to describe more in detail the generalfeatures of construction.

In the accompanying drawings I have shown an embodiment of theinvention; but it is to be distinctly understood that the principles ofthe invention can be embodied in structures widely diiferentfrom thatshown and also that various features of the mechanism can be changed oraltered without departing from the nature and principle of theinvention.

Figure 1 is a side elevation of a dumpingwagon embodying the invention,showing parts broken away and the elevating means in one position beingshown in dotted lines. Fig. 2 is an end view showing the body in itsposition for dumping. Fig. 3 is a bottom plan view of the body. Fig. 4is a top plan of the frame, the wheels, axles, and springs beingomitted. Figs." 5 and 6 are longitudinal sections showing thesupporting-frame in difierent positions. Fig. 7 is a centralcross-section showing parts broken away. Fig. Sis a perspective viewshowing one of the cams and the actuating-handle. Fig. 9 is aperspective view of one of the liftingbars; and Figs. 10 and 11 aredetail views of the ends of the lifting-bars, showing their normalposition when firstengaging the body and the position after engagement.

The base or frame consists conveniently of two rectangular members A andB, the latter surrounding the former and loosely positioned, so as to bemoved up and down. The frame A is mounted on suitable bolsters andsprings and constitutes the body of the running-gearofthewagon.Oentrallysupported in the frame A is a turn-table structure comprisingtransverse cross-bars A and longitudinal bars A with intermediatetransverse bars A, which are braced by a center bar A, as shown in Fig.4. This center bar has a central opening a, which may have'separate sidewalls or inclined walls, as desired. Mounted on suitable shafts on thefour sides 'of the turn-table frame are rollers C, positioned,respectively, between the bars A A and the frame A and bars A Theserollers are conveniently inclined or frusto-conical and are in line withthe opening a. The structure thus described is rigid with the frame Aand is conveniently slightly elevated above the upper face of the frameA, as shown in Figs. 2, 5, and 6.

The movable frame B, fitting around the frame A, is of a vertical widthor depth greater than that of the frame A and is provided convenientlyat four points along its sides with rocking cams D, D, D and D pivotedon suitable cross-shafts, the former two being pivoted on suitablecross-shafts d d, the latter being pivoted on stub-shafts mounted in theframe B. The cams are duplicated on opposite sides and, as shown, havetheir larger or more extended portions arranged to come in contact withthe upper surfaces or edge of the frame A. These cams are actu-v arm ofcam D from whence it extends to .to an arm on the cam D, thence over anidler F and back, connected with the arm of the cam D from whence it isreturned to the arm of the cam D The cams on opposite sides of the frameare coupled up in substantially the same manner, and the cams areactuated through a hand-lever G, secured to the outer end of the shaft dat the side of the wagon. By moving the lever G the outer cams will berotated in opposite directions, while the inner cams are rotated in anopposite direction to that of the adjacent end cams, respectively, sothat a perpendicular movement is secured for the frame B when the camsare operated, as distinguished from a compound movement, which wouldresult from the cams movingin thesame direction that is, a movementupward as well as endwise. As the lever G is moved the face of thelargerdiameters of the cams are brought into contact with the uppersurface of the frame A, thereby lifting the frame B upward, and in thisconnection it is to be observed that while I have not shown wear-plateson the frame A suitable plates may obviously be placed there. When theframe B is elevated by the cams, the act of elevating is alike on bothsides of the frame by virtue of the connecting-shafts dd, so that theentire frame Bis conveniently elevated to a position shown in Fig. 5. Inthis position, which is substantially the maximum, the lower edge of theframe B will still overlap the frame A. To retain the parts in thisposition, any suitable clip or catch can be applied to the handle G. Ihave not shown such a clip, for the reason that the position of the camswill be such as to supportthe load without danger of rotation.

H designates the wagon-body, having on itscentertransversesupporting-bars handacentral transverse bar h. .on thesebarsis mount ed a circular track-plate J, the same being at tached inany convenient manner. This trackplate has a sloping under face, theinclination being opposite that of the wheels 0 and C, so that when inengagement with the wheels the body is largely prevented from gettingout of proper position. From the center cross-beam it extends a centralpin K, which may be sloping or of conical shape, if desired. This pinfits in the opening a. of the bar A and acts on the pivoted centeraround which the body moves. The pin may be cast integral with the bar hor otherwise secured in position. The body H is provided with adoorframe L, of a dimension to fit the upper face of the frame B, onwhich it rests when the frame B is elevated, there being a widecontactin g area between the two members. This raising of the body uponthe frame B will generally be sufficient to retain the body in itsposition, especially in connection with the central pin K. It is,however, obvious that any suitable means may be employed for effecting arigid connection between the two,

if desired.

M designates a longitudinal shaft mounted in the frame A and a cross-barA, its inner end having a pinion m thereon meshing with a gear N on theshaft N, mounted in suitable bearings O on the bottom edges of thecrosspieces A. The outer ends of the shaft N carry drums P, on whichsuitable chains Q are wound. These chains are extended transversely andpass over suitable idlers p, mounted in a side bar on the frame A. Theends of the chains Q are clipped to the cross-bar R, located at the sideof the wagon, and which cross-bar carries at opposite ends two uprightsR, loosely working through clips 0" on the frame B and r on the body H.On the outer end of the shaft M is a crank m, which by turning eitherwinds or unwinds the chains on the drums P to elevate or lower theuprights R, for purposes presently to be stated.

In operation the body of the wagon is positioned on the frame B as shownin Fig. l, in which position the load is filled into the body. Whenthewagon is to be dumped, the same is driven up parallel with the curb.'The shaft M is then turned, permitting the bar R, with its upright R, todescend to a position shown by dotted lines, Fig. l, carrying the endsof the upright below the plane of the bottom of the body. The lever G,having been actuated to carry the cams into engagement with the frame Ato maintain the load on the frame 13, is now actuated to a-reverseposition, lowering the frame to the position shown in Fig. 6, allowingthe entire load to rest on the turn-table or wheel 0. It will thenrequire but little force or efiort to turn the body around at rightangles. This move: ment is facilitated by antifriction-wheels S at theends of the frame A. To insure of the proper positioning of the body atright angles, a suitable projection is may be employed to lit in theangular spaces between the diagonal plate A and the bars A A On the sideof the frame B are secured brackets or IZC bearing-pieces T, While thebody is provided with plates U, having cylindrical bearing extensions20, adapted to fit in the bearings T when the body is tilted, as shownin Fig. 2. hen the body is in its proper crosswise position, the ends ofthe uprights R will be located directly below the sides of the body,their ends resting in sockets V, Figs. 3, 10, and 11. In these socketsare cross-pins o, and on the ends of the uprights are transverseprojections 4' which normally, when the body is in a horizontalposition, are beyond the pin 0. In this position the crank m is turned,elevating the uprights R, which in turn carry the body upward to theposition shown in Fig. 2. In that position the hooked ends of the bars Rwill be over the pin o and pre vent any tendency of the body to overtiltor tip. The operator may then look the crank m and the shaft M inposition by any convenient means, such as a pivoted dog located at anyconvenient point on the frame A, as at W. The load is then dischargedthrough the tail-gate, after which the body is lowered, readjusted, theframe B elevated, and the uprights R carried back into the positionshown in Fig. 1.

In addition to the above-described features of the invention it may befound necessary to lock the body on the frame, which can conveniently beaccomplished by having the heel of the cams D. D enter recesses X in theunder frame of the body, as shown in Fig. 5. It is of course to beunderstood that in lowering the frame B provision will be made to permitthe edge of the same to pass belowthe protruding end of the shaft M.This will be done by cutting out a small portion of the end bar of theframe. It is also'desirable that in elevating the uprights R they beproperly guided, and with this in view suitable guide-yokes It aresecured directly below the clips 1'.

Having thus described the invention, what is claimed as new, and desiredto be secured by Letters Patent, is-

l. In a dumping-wagon, the combination with afixed frame, of a movableframe, a body loosely supported by and carried on the movable frame,antifriction devices carried by the fixed frame, and means for changingthe relative position between the movable frame and the fixed framebringing the body into contact with the antifriction devices.

2. In a dumping-wagon, the combination with a fixed frame carrying aturn-table device, of a movable frame surrounding the fixed frame, meansfor elevating and lowering the movable frame, and a body looselysupported by and carried by the movable frame when the latter is in itselevated position.

3. In a dumping-wagon, the combination with a fixed frame, of a bodypivotally supported,antifriction means interposed between the body andframe, an interposed frame movable relative to the fixed frame andindependent ofthe body for positioning the body out of contact with theantifriction devices, and means for moving the movable frame vertically.

4.. In a dumping-wagon, the combination with a fixed frame, of a bodypivotally supported,antifriction means interposed between the body andframe, an interposed frame movable relative to the fixed frame forpositioning the body out of contact with the antifriction devices, andcams for moving the movable frame vertically.

5. In a dumping-wagon, the combination with a fixed frame, of a bodypivotally supported,antifriction means interposed between the body andframe, an interposed frame movable relative to the fixed frame forpositioning the body out of contact with the antifriction devices, andoppositely movable cams for moving the movable-frame vertically. 6. In adumping-wagon, the combination with a main frame, of a surroundingmovable frame, a body, a turn-table, means for moving the movable frameand the body upward until the body is out of contact with the turntable,a series of cams on one of the frames, actuating mechanism for actuatingthe cams simultaneously to elevate and lower the movable frame and meansfor tilting the body, substantially as described.

7. In a dumping-wagon, the combination with a fixed frame and a body, ofa series of inclined rollers on the frame, an inclined track on thebody, a central pin, and means for positioning the track and rollers outof contact.

8. In a dumping-wagon, the combination with a fixed frame, of a movableframe surrounding the same, a body, antifriction devices below the body,cams for elevating the movable frame,means for actuating the cams, and aconnection between the cams and the body for preventing movement of thebody on the movable frame.

9. In a dumping-wagon, the combination with a frame, a turn-table and abody, of means for elevating the body out of contact with theturn-table, a device for tilting the body comprising a standard at theside of the frame having a sliding detached connection with the body,and mechanism for raising and lowering the standard. I

10. In a dumping-wagon, the combination with a body movable across theWagon, of means for tilting the body comprising a movable standardhaving a sliding and detached connection with the body, a rotatabledrum, and a flexible connection between the drum and the standard.

11. In a dumping-wagon, the combination of a frame, of a body adapted tobe moved transversely across the frame, brackets on the side of theframe, projections on the body engaging the brackets, means on theopposite side of the frame for tilting the body,

engaged during the movement of the body, 10 substantially as described.

In testimony whereof I aftix my signature in presence of two witnesses.

GEORGE XV. ROBERTS.

Witnesses:

FRANCIS S. BRADLEY, HENRY O. CONRAD.

